Shower filter base



FIG. 1 is a perspective view of the front of the shower filter base.

FIG. 2 is a back view of the shower filter base of FIG. 1.

FIG. 3 is a left view of the shower filter base of FIG. 1.

FIG. 4 is a right view of the shower filter base of FIG. 1.

FIG. 5 is a top view of the shower filter base of FIG. 1; and,

FIG. 6 is a bottom view of the shower filter base of FIG. 1.

The broken line showing of portions of the shower filter is included for the purpose of illustrating and forms no part of the claimed design. 

CLAIM The ornamental design for a shower filter base, as shown and described. 